ML Coaching
Many people who want to increase their muscle mass eventually run into the term "bulking." But if you think a bulking phase just means eating more and hoping your body turns it into muscle, you're wrong. Blindly shovelling in calories doesn't just risk unnecessary fat gain — it sabotages you in the long run. The smart alternative is called lean bulk, and that's exactly what we're covering today.
Before we start, let me briefly introduce myself: my name is Marco Laterza and I'm a personal trainer from Zurich. I work with people who want results. No excuses, no detours. As a coach for CEOs, entrepreneurs and high performers, I know how important efficiency is in training and nutrition.
What is a lean bulk?
Classic bulking aims to gain weight in a calorie surplus. A lean bulk pursues the same purpose, but with a system. The goal is to build muscle mass while minimising fat gain.
The trick lies in the calorie surplus: not too high, not too low. It's not about stuffing your stomach — it's about giving your body exactly what it needs for maximum muscle growth. No more, no less.
A lean bulk offers many advantages, including:
- Clean muscle growth without excessive fat gain.
- Easier, shorter cutting phases.
- Better hormone release thanks to a stable body fat percentage.
- Higher training quality through consistent energy supply.
If you plan your bulking cleanly, you save yourself a gruelling diet later. You stay high-performing, fit and visually in shape, even during the building phase.
How does lean bulking work in practice?
1. Plan your calorie surplus deliberately
Start with a moderate calorie surplus of about 150 to 250 calories daily. That's enough for building muscle without unnecessarily increasing fat. If you blindly pile on 500 or 1000 calories, you'll make life harder for yourself later.
2. Distribute your macros optimally
- Protein: approx. 2 g per kg of body weight.
- Carbohydrates: your main energy source, slightly increased on training days.
- Fats: important for hormones, but don't overdo it. Approx. 1 g per kg of body weight is enough.
3. Training: progressive and controlled
No stimulus, no growth. The focus is on:
- Progressive overload: increase regularly, whether through weight, reps or intensity techniques.
- Muscle feel: clean execution always comes first.
- Recovery: no muscle growth without recovery. Sleep, stress management and deliberate rest are mandatory.
4. Monitoring: track, adapt, adjust
- Track your body weight weekly (a gain of 0.25–0.5 kg per week is optimal).
- The mirror and your measurements matter more than the number on the scale.
- Make adjustments if fat starts increasing. Don't wait until it's too late.
What many people get wrong
Many people make the mistake of overdoing the surplus. Instead of deliberately eating a few hundred extra calories, they simply shovel in whatever ends up on the plate. The result: yes, you gain weight, but not in the shape you wanted. The muscle growth becomes messy, fat mass increases, and in the end you're left with a soft body that has little to do with what you originally wanted.
Just as fatal is a lack of overview. If you don't track, you quickly lose control. And no, you don't have to weigh every meal for the rest of your life. But if you don't know how much you're eating, you also can't know why your weight is suddenly exploding. That's when a lean bulk quickly turns into a dirty bulk.
Another mistake is impatience. Building muscle is a long-term process. If you want to see a kilo more on the scale every week, you're definitely not just building muscle. The result is frustration during the cutting phase, once you realise you first have to get rid of all that extra fat again.
Why lean bulking works for my clients
I work with people who don't have time for unnecessary systems. For entrepreneurs, managers or people in public life, staying presentable even during a building phase is essential. Nobody wants to sweat through a meeting because their body fat percentage is too high. The lean bulk is the ideal solution here.
That said, the strategy is always individual. It's based on precisely adjusting your calorie needs, a clear training structure focused on hypertrophy, and the mental clarity that comes from structured planning. That's exactly why a personal trainer is clearly recommended, especially for beginners, to give you the right direction and guide you along the way.
Conclusion
Lean bulking is the path for anyone who doesn't just want mass, but quality. It's the difference between "getting bigger" and getting better. If you build in a controlled way, you save time, keep an aesthetic physique, and can perform consistently, both professionally and athletically.
So what are you waiting for? Start your lean bulk today. And if you don't want to go it alone, you know where to find me.